Well, Porygon2 didn't put that much of a fight as expected, or I would've said that if it didn't freeze me 3 times. I guess that's what I get for still playing on the Switch 1.
Somehow this was still a winning attempt, but just barely despite every attempt of Porygon2 to sabotage me.
As usual, Azumarill's set is pretty standard 252 HP/252 Attack stuff. Amnesia and Mud-Slap return for mostly free setup. Annoyingly Porygon2 can tend to use Ice Beam over Tri Attack or Thunderbolt at times though which paid off for it this time.
My on-the-fly strategy was to Belly Drum T1 and try to faint to preserve both cheers, which I think I managed to do by turn 3 because of two Ice Beam usages. Then I waited out the timer until 70% time to be able to set up Amnesia permanently after the buff reset (while also outspeeding thanks to Trick Room). Unfortunately this was when it started freezing me. I heal cheered one Ice Beam, waited to naturally thaw out of the second, and heal cheered the third.
Thankfully Gardevoir's Life Dew was keeping me healthy and NPC Garganacl is immune to status plus debuffs speed with Rock Tomb, so I ended up outspeeding even after Trick Room. Unfortunately Synchronize doesn't synchronize freeze because I think I saw Gardevoir get frozen T1.
So I ended up going for 2 Amnesias, then setting 3 Mud-Slaps for tera charge (not caring about the tera charge steal since I was dead and also didn't attack), then tera'd into Belly Drum and started my onslaught with much less time on the clock than I would've liked. Going Tera Fairy makes you take less from Thunderbolt but more from Ice Beam and I think it started Tri Attacking at this point, I don't know. I still saw Ice Beams too.
Also since I'm back to not using 100% accurate Tera Blast, I missed 2 Play Roughs because all the 10% procs decided to collude today.
It also doubled me with a random Psychic that procced the SpD drop to waste more time.
I thought it was all but over when my next Play Rough didn't kill and the timer ran out of time and disappeared...
But suddenly it faded back in and let me mash in a last move to win anyway?
So this solo was more of a mess for Azumarill all around, but we limped over the finish line on a technicality. I guess it made it more clutch than most clears would have ended up otherwise, and winning through it all meant I get to actually show all of that happening in one post.